The Case for Ceramic Capacitors in Electric Vehicle DC-DC Converters Written By: John Lee | Simon Cen Abstract: The emergence and future ubiquity of electric vehicles have created one of the most demanding application spaces for capacitors across a wide variety of use cases. From AC charging circuits to high-speed analog sensors, electric vehicles span the gamut of design constraints while also requiring the highest reliability standards in the worst possible environments.
Technical Articles / Whitepapers
AVX Varistors for Automotive Ethernet Written By: Akihiro Kado | Michael Kirk Abstract: The ubiquity of high-performance sensor systems in modern automobiles (particularly electric and self-driving vehicles) has created immense pressure to develop automotive local area networking (LAN) solutions that offer high bandwidth, low latency, and low cost. Traditional wiring harnesses have become too heavy and complex to support these data and power needs.
Criteria for Selecting Connectors for LED Lighting/Industrial Applications Written By: Jeffery Wang | John Lee Abstract: Connectors used in industrial and solid-state lighting applications pose uniquely challenging design constraints on power density and form-factor while simultaneously demanding the highest reliability under harsh environmental conditions. As a designer in these spaces, one cannot simply prioritize piece cost in the connector selection process. The true value of a connector is much more nuanced and must include the amortized costs of manufacturability, reliability, and safety. Eliminating hand soldering, ease of use, and good yield are not free. Avoiding field failures and product recalls are not free. Regulatory compliance is not free. To best address these hidden costs, designers should choose connectors from suppliers
Conductive Epoxy Attachment of Capacitors Written By: Ron Demcko | Ashley Stanziola Abstract: Compared to the vast majority, capacitor attachment via conductive epoxy is not a common technique among end-user applications. A significant amount of growth in capacitor usage has occurred in solder attachment methods. Furthermore, many publications on attachment methods focus predominantly on optimizing the multiple methods of solder component attachment. Therefore, confusion exists on the requirements needed to ensure reliable long-term attachment when using conductive epoxy material systems. This paper serves as a general introduction to conductive adhesives. It aims to assist end-users in the conductive epoxy attachment of SMT (Surface Mount Technology) components.
Passive Automotive Electronics for 48V Systems and V2X Written By: James Emerick Abstract: Two of the driving forces behind the quickly evolving automotive industry are fuel efficiency and safety. Fuel efficiency is primarily driven by a combination of regulatory requirements for reduced CO2 emissions and consumer demands for improved operational economy. While always paramount, safety has seen renewed activity due to the advancements of driver-assist and driverless technologies. The shift toward 48V subsystems and the integration of vehicle-to-everything (V2X) communication are two prime examples of significant advances in efficiency and safety, respectively. In both cases, new classes of electronic passives (capacitors, inductors, antennas, interconnect) are required to bring these technologies to mainstream products while meeting strict automotive regulatory standards.
LED Lighting Interconnects Solutions Written By: Alex Guan Abstract: Solid-state lighting (SSL) solutions based on the light-emitting diode (LED) and its organic relative (OLED) have become the standard for luminaires across a wide variety of application sectors. SSL performance with respect to luminous output, power efficiency, lifetime, and reliability is unmatched. Many of the challenges endured by early adopters, such as cooling, manufacturability, and form factor limitations, have largely been solved. By the year 2035, it is projected that 85% of all lighting installations will be solid-state (“2019 Lighting R&D Opportunities”).
Active Band Switching Solutions Written By: Alessandro Beretta Abstract: Today’s new and emerging wireless applications are increasingly requiring the support of multiple frequency bands. From laptops to cellular phones to wearables, devices are expected to connect to any cellular, Bluetooth™, GSM, RFID, or other networks. These expectations present challenges when it comes to antenna design, compared to a traditional design. The simplest solution — using discrete antennas for each frequency band required in the application — requires extra physical space. But this ultimately clashes with industry trends that prefer smaller and smaller solutions while still providing more bandwidth.
Five Advantages of AVX Poke-Home Connectors Written By: Raul Saucedo Abstract: The poke-home connector was originally introduced as a highly reliable solution for connecting a small number of discrete wires to a printed circuit board assembly. The wire is first stripped, and it is then inserted into the connector. Integral wire guides and an end stop assure proper positioning of the wire during insertion. Dual beam high force contacts (typically beryllium copper) provide extremely low electrical resistance and maximize wire retention. An example of a horizontal poke-home connector is shown in…
Leading-Edge AVX Technology in Film Capacitors Written By: Masato Nishikiori Abstract: With the advent of plastics in the middle of the 20th century, the film capacitor was introduced as a technological leap over traditional paper-based designs. Film capacitors use a thin plastic film as the dielectric that separates multiple metal electrodes. The electrodes are either deposited directly on the film (metallization) or are built from separate metal foils. The plastic metal sandwich is wound on a bobbin, and a terminal contact layer is deposited to connect all of the individual capacitor layers in parallel effectively.
AVX Jumper Pins: Solutions for Solid-State Lighting Board-to-Board Applications Written By: Raul Saucedo Abstract: It is now a foregone conclusion that solid-state lighting (SSL), specifically based on the light-emitting diode (LED) and it’s organic relative (OLED), will become the technology standard for luminaires across a wide variety of application sectors. Its performance with respect to luminous output, power efficiency, lifetime, and reliability is unmatched. Many of the challenges endured by early adopters, such as cooling, manufacturability, and form factor limitations, have largely been solved. By the year 2035, it is projected that 85% of all lighting installations will be solid-state (“2019 Lighting R&D Opportunities”).